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Estimating IQ from Adaptive Behaviour Information in People with Moderate or Severe Intellectual Disability

Estimating IQ from Adaptive Behaviour Information in People with Moderate or Severe Intellectual... It is often useful in studies of intellectual disability to be able to stratify the sample in terms of intellectual level. However, this information is sometimes difficult to obtain, and can involve a great deal of time if full IQ assessments are performed. This study explores the accuracy with which IQ scores can be projected by multiple regression from adaptive behaviour scores provided by informants. Fifty‐one people with moderate, severe or profound intellectual disability received IQ assessments using the Kaufman Assessment Battery, and adaptive behaviour assessments using the Adaptive Behavior Scales (ABS). Ninety percent of projected estimates differed by less than 30% from that estimated by the K‐ABC. Mean percentage divergence between actual and predicted estimates of IQ for the 51 cases for which all data were available was 15.0%. Limitations of the technique are discussed. The actual coefficients for calculating IQ are given in tabular form. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Research in Intellectual Disabilities Wiley

Estimating IQ from Adaptive Behaviour Information in People with Moderate or Severe Intellectual Disability

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References (14)

Publisher
Wiley
Copyright
1997 Blackwell Publishing Ltd
ISSN
1360-2322
eISSN
1468-3148
DOI
10.1111/j.1468-3148.1997.tb00007.x
Publisher site
See Article on Publisher Site

Abstract

It is often useful in studies of intellectual disability to be able to stratify the sample in terms of intellectual level. However, this information is sometimes difficult to obtain, and can involve a great deal of time if full IQ assessments are performed. This study explores the accuracy with which IQ scores can be projected by multiple regression from adaptive behaviour scores provided by informants. Fifty‐one people with moderate, severe or profound intellectual disability received IQ assessments using the Kaufman Assessment Battery, and adaptive behaviour assessments using the Adaptive Behavior Scales (ABS). Ninety percent of projected estimates differed by less than 30% from that estimated by the K‐ABC. Mean percentage divergence between actual and predicted estimates of IQ for the 51 cases for which all data were available was 15.0%. Limitations of the technique are discussed. The actual coefficients for calculating IQ are given in tabular form.

Journal

Journal of Applied Research in Intellectual DisabilitiesWiley

Published: Mar 1, 1997

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